* Workforce, Schedule generation and geofencing.

lib/models/app_settings.dart

@@ -0,0 +1,33 @@
+class GeofenceConfig {
+  GeofenceConfig({
+    required this.lat,
+    required this.lng,
+    required this.radiusMeters,
+  });
+
+  final double lat;
+  final double lng;
+  final double radiusMeters;
+
+  factory GeofenceConfig.fromJson(Map<String, dynamic> json) {
+    return GeofenceConfig(
+      lat: (json['lat'] as num).toDouble(),
+      lng: (json['lng'] as num).toDouble(),
+      radiusMeters: (json['radius_m'] as num).toDouble(),
+    );
+  }
+}
+
+class AppSetting {
+  AppSetting({required this.key, required this.value});
+
+  final String key;
+  final Map<String, dynamic> value;
+
+  factory AppSetting.fromMap(Map<String, dynamic> map) {
+    return AppSetting(
+      key: map['key'] as String,
+      value: Map<String, dynamic>.from(map['value'] as Map),
+    );
+  }
+}

lib/models/duty_schedule.dart

@@ -0,0 +1,39 @@
+class DutySchedule {
+  DutySchedule({
+    required this.id,
+    required this.userId,
+    required this.shiftType,
+    required this.startTime,
+    required this.endTime,
+    required this.status,
+    required this.createdAt,
+    required this.checkInAt,
+    required this.checkInLocation,
+  });
+
+  final String id;
+  final String userId;
+  final String shiftType;
+  final DateTime startTime;
+  final DateTime endTime;
+  final String status;
+  final DateTime createdAt;
+  final DateTime? checkInAt;
+  final Object? checkInLocation;
+
+  factory DutySchedule.fromMap(Map<String, dynamic> map) {
+    return DutySchedule(
+      id: map['id'] as String,
+      userId: map['user_id'] as String,
+      shiftType: map['shift_type'] as String? ?? 'normal',
+      startTime: DateTime.parse(map['start_time'] as String),
+      endTime: DateTime.parse(map['end_time'] as String),
+      status: map['status'] as String? ?? 'scheduled',
+      createdAt: DateTime.parse(map['created_at'] as String),
+      checkInAt: map['check_in_at'] == null
+          ? null
+          : DateTime.parse(map['check_in_at'] as String),
+      checkInLocation: map['check_in_location'],
+    );
+  }
+}

lib/models/swap_request.dart

@@ -0,0 +1,36 @@
+class SwapRequest {
+  SwapRequest({
+    required this.id,
+    required this.requesterId,
+    required this.recipientId,
+    required this.shiftId,
+    required this.status,
+    required this.createdAt,
+    required this.updatedAt,
+    required this.approvedBy,
+  });
+
+  final String id;
+  final String requesterId;
+  final String recipientId;
+  final String shiftId;
+  final String status;
+  final DateTime createdAt;
+  final DateTime? updatedAt;
+  final String? approvedBy;
+
+  factory SwapRequest.fromMap(Map<String, dynamic> map) {
+    return SwapRequest(
+      id: map['id'] as String,
+      requesterId: map['requester_id'] as String,
+      recipientId: map['recipient_id'] as String,
+      shiftId: map['shift_id'] as String,
+      status: map['status'] as String? ?? 'pending',
+      createdAt: DateTime.parse(map['created_at'] as String),
+      updatedAt: map['updated_at'] == null
+          ? null
+          : DateTime.parse(map['updated_at'] as String),
+      approvedBy: map['approved_by'] as String?,
+    );
+  }
+}